Bar stool



FIG. 1 is a front perspective view of the design of the instant invention.

FIG. 2 is a rear perspective view of the design of the instant invention.

FIG. 3 is a side view of the design of the instant invention.

FIG. 4 is an oblique rear perspective view of the design of the instant invention.

FIG. 5 is an oblique rear perspective view of the design of the instant invention. 

The ornamental design for a bar stool, as shown and described. 